Series 9303-SP Self-Priming

Hypro self-priming centrifugal pumps handle big, high-capacity spraying jobs and tank filling with ease. They offer outstanding performance without the need for a flooded suction inlet.  The pumps are ideal for sprayers that require pump mounting above the carrier tank.

The broad, versatile line includes models with rugged housings of cast iron and stainless steel that stand up to strong chemical herbicides. Stainless steel pumps are ideal for use with Roundup® or other acid applications.  Polypropylene pumps are lightweight and provide excellent resistance to corrosive chemicals.

The series includes models 9303C-HM1C-SP, 9303S-HM1C-SP, 9303C-HM2C-SP, 9303S-HM2C-SP, 9303C-HM3C-SP, 9303S-HM3C-SP, 9303C-HM4C-SP, 9303S-HM4C-SP, 9303C-HM5C-SP, and 9303S-HM5C-SP.


Performance Information

  • Max. flow: 98-122 gpm/371-462 lpm (free flow)
  • Max. pressure: 80-140 psi/5.5-9.7 bar (in closed center operation) (Shut off)
  • Max. fluid temperature: 140°F/60°C


Other Attributes

  • Hydraulic motor drive (for open and closed center systems)
  • Housing: cast iron and stainless steel
  • Port sizes: 11⁄2" NPT inlet, 11⁄4" NPT outlet
  • Impeller: Cast Iron models – glass-filled nylon; Stainless Steel models – polypropylene
  • Centrifugal shaft seals: Cast Iron models – Viton/ceramic are standard; Stainless Steel models – Life Guard silicon carbide (Buna-N/ceramic and Viton/silicon carbide are available)
  • Weight: 38 lbs./17.3 kg

Motor Characteristics

  • Motor: internal gear gerotor
  • Motor capacity: 5-20 gpm/18.9-75.7 lpm
  • Max. motor psi: 2000 continuous duty, 2200 intermittent duty
  • Hydraulic ports: 1⁄2" NPT
  • Hydraulic motor seal: double-lip Teflon



Series 9300 Hydraulic Centrifugal Operation, Installation & Parts Manual (Use for pumps manufactured 2010 and later)

This chart contains performance information on series 9303-SP in Metric.